function dateFormat(dateStr){
	const dt = new Date(dateStr)
	
	const y = dt.getFullYear()
	const m = padZero(dt.getMonth() + 1)
	const d = padZero(dt.getDate())
	
	const hh = padZero(dt.getHours())
	const mm = padZero(dt.getMinutes())
	const ss = padZero(dt.getSeconds())
	
	return `${y}-${m}-${d} ${hh}:${mm}:${ss}`
}

function padZero(n){
	return n > 9 ? n : '0' + n
}

module.exports = {
	dateFormat
}
